Open AccessINFLUENCE OF LITHOLOGIC FACTOR ON GAS SATURATION OF COAL-BEARING STRATA SANDSTONES
Author(s) -
Kostiantyn Bezruchko
Publication year - 2013
Publication title -
geolog ukraïni/geolog ukraì̈ni
Language(s) - English
Resource type - Journals
eISSN - 2786-5509
pISSN - 1727-835X
DOI - 10.53087/ug.2013.3(43).245383
Subject(s) - saturation (graph theory) , geology , lithology , coal , natural gas , methane , petroleum engineering , geochemistry , water saturation , mineralogy , geotechnical engineering , porosity , chemistry , mathematics , organic chemistry , combinatorics
In order to study the influence of sedimentation conditions on filtering-capacity properties researches of relative gas saturation of Donbas sandstones of different lithogenetic types are conducted, they contain coals of grade composition from long-flame to the lean. River-bed sandstones (relative gas saturation 85–90%) are the most gas-saturated from a number of investigated materials, and consequently potentially gas-bearing containing coals of the metamorphism low stages (up to and including fat coal step). However, sandstones of the under water rivers carry-over (relative gas saturation 65–72%) are the most perspective for the search of methane accumulations, both from reservoir properties point of view as well as taking into account their volumes in the coal-bearing strata.